Laws of Motion ...

Two fixed frictionless inclined plane making an angle 30° and 60° with the vertical are shown in the figure. Two blocks A and B are placed on the two planes. What is the relative vertical acceleration of A with respect to B ?

A coin of mass 10 g is placed over a book of length 50 cm. The coin is on the verge of sliding when one end of the book is lifted 10 cm up. The coefficient of static friction between the book and the coin is

Force required to move a mass of 1 kg at rest on a horizontal rough plane (µ = 0.1 and g = 9.8 ms^-2) is

Two blocks of masses m and 2m are connected by a light string passing over a frictionless pulley. As shown in the figure, the mass m is placed on a smooth inclined plane of inclination 30° and 2m hangs vertically. If the system is released, the blocks move with an acceleration equal to

If a block slides down a plane inclined at 30° with horizontal, then the coefficient of friction between the block and inclined plane is

A block rests on a rough inclined plane making an angle of 30° with the horizontal. The coefficient of static friction between the block and the plane is 0.8. If the frictional force on the block is 10 N, the mass of the block (in kg) is (take, g =10 ms^-2)

A body of mass 5 kg is suspended by a spring balance on an inclined plane as shown in figure. The spring balance measure

A block is kept on a frictionless inclined surface with angle of inclination α. The incline is given an acceleration α to keep the block stationary. Then, α is equal to